``It is a dangerous way to conduct monetary policy. A large trade surplus may have helped create jobs in China, but the accumulated funds helped finance the asset bubbles which eventually popped, leading to the current global malaise. The Fed's previous rounds of quantitative easing just might have helped the American economy, but they almost certainly pushed up commodity prices, which stimulated economic and political tension in many poor countries. They also spawned ill will among the central bankers who were forced to deal with collateral damage from the U.S. war against domestic financial disorders.''